Numerical Modeling and Experimental Testing of a Solar Grill

Abstract

A detailed study of a solar cooker used for meat grilling was performed. Experiments were undertaken to test the effects of several parameters on the cooker performance. A mathematical model for the solar grill was developed. Heat balance equations were solved using the fourth-order Runge-Kutta technique. It was concluded that an air-tight oven with double glazing and maximum meat charge will give the best performance and highest efficiency for the solar grill.

Experimental testing of a box-type solar cooker using the standard procedure of cooking power

“…Therefore, a maximum load will give the best performance and highest efficiency for Model II of the solar cooker. Olwi and Khalifa also drew this conclusion in their theoretical study of a solar grill [11]. Values of t c were obtained as 76.7 and 40.8 (min m 2 /kg) when boiling 1 kg of water in Models I and II, respectively.…”

“…To apply the thermal test procedures for box-type solar cookers [6,11,12,16] to the present design, experiments were performed on July 2002 for the two models of the cooker (see Fig. 1).…”

“…The second and third methods are better approaches [10] because the first method involves uncertainties due to variation in the ingredients and judgement of the observer as to when exactly the food is completely cooked. Khalifa et al [6,11] used the second method to evaluate solar cooker performance by calculating the overall thermal efficiency h u as well as the specific t s and characteristic t c boiling times. The t s (min m 2 /kg) represents the time required to boil 1 kg of water using a solar cooker of 1 m 2 aperture area.…”

“…I Ã av is a reference average solar intensity equals 900 W/m 2 [6,11]. DT f is the temperature difference between the maximum temperature of the cooking fluid and the ambient air temperature and A c is the aperture area (m 2 ) of the cooker.…”

Novel mixed solar cooker: Experimental, energy, exergy, and economic analysis

“…Meanwhile, t c serves as an essential evaluation metric for the thermal efficacy across various designs of solar cookers. These parameters, t s and t c , are computed using the equations outlined in Khalifa et al, 33 Olwi and Khalifa, 34 and Tawfik et al 35…”